MSD7342-474MLC

Common Mode Chokes Overview

The MSD7342-474MLC is a shielded coupled power inductor from Coilcraft, designed for DC-DC converter applications. It features a 1:1 coupling ratio and a ferrite core construction within a compact SMD package measuring 7.5 mm by 7.5 mm with a height of 4.6 mm. The component has a nominal inductance of 470 µH per winding, a tolerance of 20%, and a rated current of 0.28 A. Its DC resistance is specified at 4 ohms. The device operates within a temperature range of -40°C to +85°C and complies with RoHS standards.

Common Mode Chokes Feature Summary

• Magnetic shielding provides compact packaging and minimizes electromagnetic interference.
• Tight 1:1 winding-to-winding coupling ensures stable performance in coupled circuits.
• Dual-wound structure supports complex power conversion topologies.

Common Mode Chokes Applications

• SEPIC converter circuits
• Flyback transformer alternatives
• Isolated DC-DC converter designs

Common Mode Chokes Procurement Notes

Verify the suffix 'MLC' against official Coilcraft documentation to confirm specific testing or compliance attributes. Ensure the requested quantity matches standard reel sizes if applicable. Confirm that the operating environment remains within the specified -40°C to +85°C range to maintain reliability. Cross-reference the part number with the manufacturer's latest datasheet to avoid discrepancies in pinout or electrical ratings.

Common Mode Chokes Selection Notes

Select this component when a compact, shielded coupled inductor is required for isolated or non-isolated power stages. The 470 µH value suits low-frequency switching applications requiring high energy storage. Consider the 0.28 A current rating to ensure it meets the load requirements without saturation. The 3030 footprint allows for space-constrained PCB layouts compared to larger through-hole alternatives.

Common Mode Chokes Part Context

This part belongs to the MSD7342 series of shielded coupled power inductors. The series is characterized by its small surface-mount form factor and robust magnetic shielding. These components are engineered to replace traditional discrete transformers in various power supply architectures, offering improved efficiency and reduced board space usage.

Common Mode Chokes Replacement Considerations

Consult the Coilcraft MSD7342 series selection guide for alternative inductance values or current ratings. Verify mechanical compatibility with existing footprints before substituting. Ensure any replacement maintains the 1:1 coupling ratio and shielding characteristics required for the specific circuit topology.